Package edu.emory.mathcs.h2o

H2O is Java-based, secure, scalable, stateless, lightweight, flexible, component-hosting middleware environment.

See:
Description

Interface Summary

KernelContext	Represents a handle to a H2O kernel.
LoginSession	Represents a session that was opened by the current user.
LoginSession.DisconnectionHook	Hook called when the login session loses connection to the kernel, for instance because of a network failure or because of asynchronous destroy of that session by an authorized third party.
Pluglet	The interface representing H2O pluglet, which is a component that can be deployed into the H2O kernel (container).
Pluglet.RuntimeContext	The runtime environment information passed to the pluglets during initialization.
Pluglet.Suspendible	Optional interface to be implemented by the pluglet that wishes to be notified before being suspended and after being resumed.
PlugletContext	This class represents a handle to a pluglet.
Session	Represents the session existing within the H2O kernel.

Class Summary

DeploymentDescriptor	Information of the pluglet to be deployed in the H2O kernel.
DeploymentDescriptor.RetryPolicy	Decides what to do if pluglet of requested name already exists.
ExportProperties	Information of requested link properties when acquiring a reference to the pluglet using PlugletContext.bind().
ExportProperties.Messaging	Represents the properties of messaging protocol (e.g.
ExportProperties.Transport	Represents a byte transfer protocol.
ExportProperties.Transport.Compressed	Enables compression over some other transport passed to the constructor.
ExportProperties.Transport.SSL	Enables SSL over some other transport passed to the constructor.
H2O	Facade class providing an entry point to the API.
H2OClient
KernelLocator	This class is a locator for the KernelContext.
Pluglet.State	Represents the pluglet state.
PlugletLocator	This class is a locator for the PlugletContext.
ServerSession	Can be used by pluglets to obtain information about current server session in which the caller code is executing.
ServerSession.ServerSessionPrincipal
Session.RemotePrincipal	Represents the authenticated principal associated with the session at the kernel side.
Session.State	Represents the session state.

Exception Summary

IllegalPlugletStateException	Indicates that requested operation cannot be fulfilled in the current pluglet state.
PlugletExecutionException	Thrown to indicate that pluglet encountered an exception and is being destroyed.

Package edu.emory.mathcs.h2o Description

H2O is Java-based, secure, scalable, stateless, lightweight, flexible, component-hosting middleware environment. H2O is more general than traditional component frameworks (like J2EE) in the sense that it allows not merely container owners but any authorized third parties or clients themselves to deploy services into the container. Common usage scenario involves clients deploying computational services and using them afterwards, thus availing of the raw computational power shared by the container owner. Hence, resource sharing and grid computing systems can be naturally formed using H2O.

For download, documentation, source code, and to ask questions, please visit project home page at:

http://www.mathcs.emory.edu/dcl/h2o/